Re: String joining an array of structs or class instances implementing toString?

[Edwin van Leeuwen via Digitalmars-d-learn]

On Thursday, 11 February 2016 at 12:44:15 UTC, pineapple wrote:

It feels like there should be an out-of-the box way to do this but I haven't been able to find it? Help?

This is the thing that I want to do:

struct example{
    const string str;
    //this(string str){ this.str = str; }
    string toString(){
        return this.str;
    }
}

public void main(){
    import std.stdio;
    import std.string;
    example[] parts = [example("hello"), example("world")];
    writeln(std.string.join(parts, " "));
}

I'd do it like this:

import std.algorithm : map;
pars.map!((part) => part.toString) // Turn them to strings
 .join(" ").writeln; // Join them.